"Other than garnering wide support in animal rights circles the world over, San Diego’s death metal/grind outfit Cattle Decapitation have accrued a sizeable amount of attention in the broader metal realm.

"In addition to" would make more sense here. the way you currently have it phrased makes it seem like you're about to say they haven't done shit else.

good review. might check it out, though i imagine it's not really my thing. heard they kill live.